[Elecraft] Spanner Wrench / socket ?

[n0jrn]

Sort of off topic   BUT     does anyone use and have a source for a spanner 
wrench or socket to fit the nuts on
Elecraft rigs such as what is on the key jack on the K2?

I've done a lot of searching without any luck.

Just curious if I've overlooked a source or an alternative method of 
tightening this type of nut........

thanks and 72

Jerry           N0JRN